Transfer apparatus for printing presses



Oct. Il, 1938. P. H. SCHULZ TRANSFER APPARATUS Eon PRINTING PREssEs 2Sheets-Sheet 1 Filed March 14, 1938 Suunto:

PML-2f. 5

*414 Gttomeg oct. 11, 1938. y P H SCHULZ 2,132,998

TRANSFER APPARATUS FORPRINTING PRESSES Filed Ilarch 14, 1938 2Sheets-Sheet 2 l 1 I m :n 5 S i 1 1U 'c/ I \-x L 1 6,- v [L l i m l x""1 a l It a, l IL l if l l I Il.' l Y I Y." Y Y o :l -I Snvmtor' SBN 1)Umax/8W '2 wa/www ul/Ottersum Patented ocr. 11, 193e PATENT yOFFICETBNSFER APPARATUS FOB. PRINTING PRESSES rain n. schulz, Moline, n1.

Application March 14,

Claims.

My invention has reference to a transfer apparatus for printing presses,and has for its chief purpose to increase the eiiiciency and utility ofsuch devices. It is more specially adapted for use 5 with the verticaltype of presses, and is provided with mechanical devices of an automaticcharacter which will prevent the sheets of paper which are being fedinto the press from lagging or getting out of place. By its use thesheets of paper will be brought successively into hair-line register, atany speed of the press, and with exact reproduction of the printedmatter in case of re-printing, as in the use of extra colors.

Another purpose of the invention is to have the body portion, or tableof the instrument and mechanical features thereof of such a characterthat they can be readily attached to presses already in use, andsubstituted for similar devices With vwhich such presses may beequipped.

By the use ofthe vinvention the sheets of paper which are deliveredthereto are brought into accurate and uniform position for engagement bythe gripping devices of the press, and are prevented from getting out ofplace by fingers or clips which haveya yieldable engagement with theedges of the sheets. 'This insures an accurate printing of the sheets,and not only saves on the material, but in the time which is frequentlythe stoppage of the machine therefor.

vision of means for adjustment of some of the parts thereof, so as toadapt the same to sheets of paper of different sizes. These parts arealso susceptible to a reversal in position, so as to be operable withsheets or strips of a minimum size. The actuating clips are also capableof adjustment on their support, and can be quickly removed therefrom andreplaced.

Another purpose of the invention is the-provision of means for holdingsheets of paper in place that have a tendency to curl, and compel givento the removal of spoiled sheets, and in Another purpose ofthe inventionis the pro-v Y 1938, Serial No. 195,864

Fig. 2 is anv enlarged detail of one of the spring clips 58.

Fig. 3 is a fragmentary plan viewfthereof.

The reference number 6 indicates` a portion of a frame of a printingpress of vertical type, from which project brackets 1, (only one shown)in, which is journalled a shaft 8, upon which is mounted a cylinder 9,upon which the sheets of paper are held during the printing operation.Projected from the brackets 1 are lugs I0, pivotally connected withwhich are arms I I, as at a, supporting a plate I1, upon which ismounted a cross-head I2. The rear tapered edge of the cross-head I2 isin proximity to a series of gripping devices I3, carried by the cylinder9. Supported in the upper part of the frame 6 is a rock-shaft I4, fromwhich a pair of arms I5 is projected outwardly for the support of a rodI6, in proximity to the cross-head I2. The parts hereinbefore describedare common to machines of the class named.

The plate I1 is projected outwardly to support the inner side of a tableI8, secured to said plate by bolts I9. The table is divided into twoparts enclosed by rims 20, within which are pads 2|, preferably formedof material which will be a non-conductor of electricity. Centrally ofthe table I8 is a channel 23, in which is slidable a bar 24, secured towhich is a rod 25. Beneath the table I8 is a bracket 25, in the lowerpart of which is pivoted an arm 2l, provided at its lower end with asleeve 28, supporting a pin 29, which can be held in adjusted positionstherein by a set-screw 30. One end of the pin 29 carries a roller 3|,engageable with a cam 32, supported by an arm 33 and mounting 34,attachable to a post 35 forming part of the mechanism for supportingasupply of paper stock, as indicated fragmentarily at 35. The sheets ofpaper in the stock are fed one at a time in the direction of the tableI8 by a feed-arm mechanism shown at I1 and mechanism for actuating thesame, not shown in the drawings.

At the lower end of the arm 21 is a lug 42, to which is pivotallyconnected one end of a bar 44, the other end of which is similarlyconnected with an arm attached to the slide-bar 24 and having movementin a slot 46 in the table Il, and held from release by a washer 41 andpin -in the arm. Near the othernend of the bar 24 is fixed thereto a lug48, havingplay in a slot 49, and held in place by a washer 50 and pin.The arm 45 is connected by a coiled spring 5l with an ear 52 on thelower face vof table I8, which spring tends to-hold the 'arm l45 andconnected parts at the outer end of their movement, against the actionof the cam.

Supported on the table I8 is a cross-plate 53, secured to a sleeve 64held slidably on the rod 25, by means of a screw 65, the end of whichmay be engaged with said rod, to hold the parts in adjusted positionseOn opposite ends of the plate 53 are small tracks 56, with bevelededges, forming guides for dogs 51, supporting clips or joggers 58, bymeans of pins 59, siidable in said dogs. Springs 66 are interposedbetween the dogs and clips by means of which said clips can be heldyieldably in active positions. Said plates are provided with plates 6I,upon which the rear edges of the paper sheets are deposited, and areprojected upwardly into curved anges 62, with an overhang at 63interfering with the movenient of a sheet upwardly when in engagementwith the clip. Such a sheet of peper is shown at 36 in Fig. 1, afterbeing received from the pile of sheets before mentioned,

In the operation of the press the cylinder 9 is given a verticalreciprocating movement, and at the approach to the upper end of suchmovement the shaft I4 is automatically rocked by devices not shown inthe drawings, elevating the rods I6 as shown in broken lines in Fig. 1.One ef the sheets of paper to be printed, shown at 36, is then fed ontothe table I6, with the inner edge of the paper resting against thegripping devices I3. The opposite edge of the paper rests upon theplates 6I of the clips, and as the mechanism starts to move downwardlythe rods 65 close down on the paper, holding the same lightly frommovement-i As the downward movement continues, the roller 3| comes incontact with the cam 32, meving the plate 53 and causing the clips 58 toyieldably engage the edge of the paper, and bring it into true positionfor engagement by the gripping devices, and for printing on thecylinder. 'Ihe jcgging action of the clips serves to position each sheetof paper in current position, se that the sheets will have a hairlineregistry, and so that the printing on all of the sheets wlli be correctand uniform. An:-7 irregularities in the sheets or dierences in widthsor other dimensions thereof will be taken care of, and equalized by theaction of the clips.

The clips are not only capable of being adjusted along the tracks 56,but the position of the cross-plate 53 can be changed with vreference tothe grippers i3. The plates 53 can also be reversed in psition, bringingthe edge with the clips on nearer to the gripping devices, and for thisuse the positions of the clips would also be reversed. This makes itpossible te use the device with narrower sheets of paper, or withcard-board, such as postcards.

' Trouble is sometimes encountered with the stock, on account of thesheets therein having a tendency to curl, and get out of place. This isovercome hy means of a pair of rods 65, having loops 66 encircling theshaft I4, and held to the rod I6 by wire hooks 61, between which and theloops 66 are coiled springs 68. The rods 65 are brought downwardly upona sheet of paper on the table I8, indicated at 36, and holds the same ina flat condition while the sheet is being conveyed to the cylinder. Asthe rod I6 is raised, to permit insertion of another sheet.

y the rods 65 are raised cut of the way, as shown in broken lines inFig. 1.

What I claim, and desire to secure, is:

1. A device of the class described, comprising a table adapted forattachmentl to the cylinder frame of a printing press, to reciprocatetherewith, means 'for feeding successive sheets of paper to said table,with one edge of each of said sheets in engagement with the grippingdevices ef a press, jogging devices on said tabie for uniformarrangement of said sheets, means for actuating said jogging devices,and means for preventing the sheets from curling in their passage overthe table.

2. A device of the class described, comprising a table, adapted forattachment to the cylinder frame of a printing press, to reciprocatetherewith, and capable of receiving sheets of paper in succession, froma supply thereof, means on said table for jogging the sheets of paperinto proper position for engagement by the gripping devices of a press,means for holding said sheets from curling while on the table, and meansfor automatically moving said last-named means out of the way when asheet of paper is to be fed to the table.

3. In a device of the class described, a table adapted for attachment tothe cylinder frame of a printing press, to reciprocate therewith, andprovided with a central channel, a slidebar in said channel, across-plate connected with said slide-bar, and provided with yieldablymounted jogging members, a rock-arm supported beneath said table andoperatively connected with said slide-bar, and cam mounted in proximityto said roch-arm to automatically actuate said rock-arm Iand slide barupon the downward movement of the table.

4. In a device of the class described, a table adapted for attachment tothe cylinder frame of a. printing press, to reciprocate therewith, andprovided with a central channel, a bar held slidably in said channei andprovided with a rod support, a jogging mechanism slidable on said table,and connected with said rod, for adjustment thereon, an arm rockinglysupported beneath said table, a cam supported in proximity to said arm,for the action thereof, connections between said arm and said slide-har,and means for returning said slide-bar tc its original position afterbeing actuated.

5. A device of the class described, comprising a table, adapted toreceive a succession of sheets of paper and deliver them to a printingpress mechanism, and previded with a central channel, a slide-bar insaid channel and support connected therewith, a cross-plate on saidtable, connected with said support, and reversible in position, aplurality of jogging devices connected with said cross-plate, andreversible in position thereon, and means for actuating seid slide-bar,to operate said jogging devices.

PAUL H. SCHULZ.

